How to jailbreak iOS 4.3.1 untethered with PwnageTool


06.04.2011

How to jailbreak iOS 4.3.1 untethered with PwnageTool

PwnageTool has just been updated to support the untethered jailbreak of iOS 4.3.1, a most welcomed treat to all Apple users. This can be done by following our simple how-to guide below, and it’s available for MAC users only. If you are reading this from a PC, we recommend Redsn0w. PwnageTool can be used for devices like iPhone 3G / 4 GSM, iPod Touch 3G / 4G, Apple TV 2G and for the original iPad. The Verizon iPhone 4 ( CDMA ) and the iPad 2 are left aside for now.

Being an untethered jailbreak, this process must be done only once. The “quality” will remain present even after you restart the phone. This means you will NOT need tools like iBooty, to remake the jailbreak, after each reboot.
Like always, by jailbreaking iOS 4.3.1 with PwnageTool you will basically create a baked custom firmware, from a stock version. This will implicate several steps, and you are going to need tools like iTunes and the classic USB cord. Everything else will be found in our steps below.

The biggest difference between jailbreaking with PwnageTool and any other program is that unlocking is still possible. Although Ultrasn0w hasn’t been updated yet, to support the iOS 4.3.1 firmware, unlocking can be done for some models, with already supported basebands. What you have to do is update to iOS 4.3.1, while preserving the baseband. This can be done with TinyUmbrella, but is only available for iPhone 4 users at this moment.

When it comes to compatibility issues, the PwnageTool jailbreak for iOS 4.3.1 currently supports the iPhone 3GS / 4 (GSM), the original iPad, the iPod Touch 3G / 4G and the Apple TV 2G. The steps remain the same for all devices, and they can only be performed using an MAC.

If you were wondering why the CDMA Verizon iPhone 4 and the iPad 2 can’t be yet jailbroken on iOS 4.3.1, untethered, this is because the Verizon iPhone 4 is stuck on iOS 4.2.6, an unknown ground in the present. As for the iPad 2, this device does not rely on a basic A5 Apple processor, and this makes it invulnerable against exploits like Shatter and limera1n.

iOS 4.3.1 pwned

How to Jailbreak iOS 4.3.1 Untethered with PwnageTool
  1. Connect the iDevice to your MAC, using the USB cable.

  2. Start iTunes and let it sync.

  3. Backup all your data, using iTunes or, manually.

  4. Download the stock iOS 4.3.1 firmware and save it on the desktop.

  5. Download PwnageTool 4.2 and start it.

  6. When PwnageTool loads, choose “Expert Mode” from the top menu, select the device and then click on the blue arrow to continue.

  7. Select the stock iOS 4.3.1 firmware by pressing on the Browse button, in the next window. When done, go to the next step.

  8. Select General and click on Blue.

  9. Increase the size of the root partition to 1024 MB and select the “Activate the phone” checkbox. For those officially activated on a carrier, deselect it and continue.

  10. The next screen will allow you to add repositories. Go to “Manage Sources” and add the sources you like. Now go to “Download Packages”, select the apps you want to install and click on “Add to queue”. This will make them available after the restoration process. In the screen below we did these for OpenSSH and Automatic SSH. Now click on Blue to continue.

    Our choice

  11. Select the “Cydia installer” and then click on Blue.

  12. Touch on “Build” and then on Blue.

  13. Select the location you want to save the custom firmware we are about to create. Please note that this firmware will be jailbroken, and you must not mistake it with the stock iOS 4.3.1 file, which we previously downloaded.

  14. When the building process completes, you will be asked to put the device in DFU mode. To do this, follow the on screen instructions.

  15. Once successful, open iTunes and wait for him to recognize the device.

  16. Now press ALT + Restore buttons and select the custom .ipsw file we created, three steps before.

  17. Wait for iTunes to restore the device and that’s it. You have jailbroken iOS 4.3.1, untethered.

As I said above, if you used TinyUmbrella to preserve the baseband when updating to iOS 4.3.1, you have a GO for unlocking. If not, you must wait for Ultrasn0w to renew itself.

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